var STF = Ext.extend(Ext.form.TextField, {
			initComponent : function() {
				STF.superclass.initComponent.call(this);
				this.addEvents('2click');
			},

			initEvents : function() {
				STF.superclass.initEvents.call(this);
				this.on(this.el, 'dblclick', function() {
							this.fireEvent('2click', this);
						}, this);
			}
		})
// Ext.form.ComboBox
		//Ext.Layer
Ext.onReady(function() {

			var f = new Ext.FormPanel({
						renderTo : Ext.getBody(),
						items : [new Ext.form.TwinTriggerField(), {
									xtype : "trigger"
								}, new STF({
											fieldLabel : "dafd",
											listeners : {
												"2click" : function() {
													alert("ddd");
												}
											}

										})]

					})

		})
